The hand-rolled Copy button (bold, custom-shaded accent fill) and the floating
accent "toast" pill both looked out of place. Replace the button with the
canonical mtk::draw_button (BUTTON_PRIMARY), matching the Refresh button in
Devices and buttons elsewhere. Replace the floating pill with a plain
"Copied to clipboard" status line in the footer, right-aligned beside the Copy
button, that fades after ~1.6s — no overlay drawn over the character grid.
Co-Authored-By: Claude Opus 4.8 <[email protected]>